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In page Rhea Silvia:

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Despite Livy's euhemerist and realist deflation of this myth,[citation needed] it is clear that the story of her seduction by Mars continued to be widely accepted. This is demonstrated by the recurring theme of Mars discovering Rhea Silvia in Roman arts: In bas-relief on the Casali Altar (Vatican Museums), in engraved couched glass on the Portland Vase (British Museum), or on a sarcophagus in the Palazzo Mattei. Mars' discovery of Rhea Silvia is a prototype of the "invention scene" ("discovery scene") familiar in Roman art; Greek examples are furnished by Dionysus and Ariadne or Selene and Endymion.